Results 1 to 10 of about 125,191 (194)
Spurious modes in extended RPA theories [PDF]
The European Physical Journal A, 2003 Necessary conditions that the spurious state associated with the translational motion and its double-phonon state have zero excitation energy in extended RPA (ERPA) theories which include both one-body and two-body amplitudes are investigated using the ...
Adachi +34 more
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Acoustic displacement triangle based on the individual element test [PDF]
Latin American Journal of Solids and Structures, 2012 A three node -displacement based- acoustic element is developed. In order to avoid spurious rotational modes, a higher order stiffness is introduced. This higher order stiffness is developed from an incompatible strain field which computes element volume
S. Correa, C. Militello, M. Recuero
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The Suppression of Spurious Modes in TC-SAW Resonators by the Application of Bent Metal Strips [PDF]
SensorsThis article investigates the use of bent metal strips on the top of a SiO2 layer for the suppression of spurious modes in temperature-compensated surface acoustic wave (TC-SAW) resonators employing a SiO2/Cu/128°YX-LiNbO3 structure.
Menghui Li +6 more
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Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances [PDF]
Radioengineering, 2013 Film bulk acoustic wave resonators (FBARs) are of great interest for wireless applications due to its inherent advantages at microwave frequencies. However, the presence of spurious modes near the main resonance degrades the performance of resonators and
P. Kumar, C. C. Tripathi
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Towards the Optimization of Apodized Resonators [PDF]
MicromachinesBulk Acoustic Wave (BAW) resonators are essential components in modern RF communication systems due to their high selectivity and quality factor. However, spurious resonances caused by Lamb wave mode propagation along the in-plane directions degrade the ...
Ana Valenzuela-Pérez +2 more
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Edge treatment for spurious mode suppression in thin-film lithium niobate resonators [PDF]
Scientific ReportsThin-film lithium niobate is an attractive material for RF acoustic devices because of its high electromechanical coupling. However, due to the large coupling and the high anisotropy, thin-film lithium niobate resonators are prone to accidental ...
Arjun Aryal +4 more
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Coherent electrically-charged quantum black holes [PDF]
European Physical Journal C: Particles and FieldsWe improve upon the results presented in Casadio et al. (Phys Rev D 105:124026, 2022) deriving a quantum-corrected Reissner–Nordström geometry containing an integrable singularity at its center while being devoid of spurious oscillations around the ...
Tommaso Antonelli +2 more
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A Laterally Excited Bulk Acoustic Wave Resonator Based on LiNbO3 with Arc-Shaped Electrodes [PDF]
MicromachinesHigh frequency and large bandwidth are growing trends in communication radio-frequency devices. The LiNbO3 thin film material is expected to become the preferred piezoelectric material for high coupling resonators in the 5G frequency band due to its ...
Jieyu Liu +4 more
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Power counting and modes in SCET
Journal of High Energy Physics, 2018 We present a formulation of soft-collinear effective theory (SCET) in the two-jet sector as a theory of decoupled sectors of QCD coupled to Wilson lines.
Raymond Goerke, Michael Luke
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Variant Characteristic Mode Equations Using Different Power Operators for Material Bodies
IEEE Access, 2021 This paper is concerned with the electromagnetic theory of characteristic modes for general homogeneous material bodies using surface integral equations (SIEs), which are computationally more efficient than using volume integral equations (VIEs). However,
Xing-Yue Guo, Ren-Zun Lian, Ming-Yao Xia
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